This page no longer updated from 31 October 2001. Latest version can be found at Isayev DOS-3/4

Designer: Isayev. Developed in: 1972-74. Application: DOS-3/4. Used on spacecraft: Salyut 4. Propellants: Nitric acid/UDMH Thrust(vac): 400 kgf. Thrust(vac): 3.92 kN. Country: Russia. Status: Out of Production.
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Last update 12 March 2001.
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© Mark Wade, 2001 .